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                                <h2 id="&#x4E8B;&#x4EF6;&#x7ED1;&#x5B9A;">&#x4E8B;&#x4EF6;&#x7ED1;&#x5B9A;</h2>
<ul>
<li><p>DOM0 &#x7EA7;&#x4E8B;&#x4EF6;&#x6DFB;&#x52A0;&#x65B9;&#x5F0F;</p>
</li>
<li><p>&#x5728;&#x5143;&#x7D20;&#x6807;&#x7B7E;&#x4E0A; &#x76F4;&#x63A5;&#x6DFB;&#x52A0;<code>&lt;div onclick=&quot;evnetHandle()&quot;&gt;&lt;/div&gt;</code>;</p>
</li>
<li>&#x5728;dom&#x5143;&#x7D20;&#x4E0A;&#x6DFB;&#x52A0;&#x4E8B;&#x4EF6;&#xFF0C;box3.onclick = function(){}</li>
</ul>
<p><strong>&#x6CE8;&#x610F;</strong></p>
<ol>
<li>&#x7B2C;&#x4E8C;&#x79CD;&#x65B9;&#x5F0F;&#x7684;&#x4F18;&#x5148;&#x7EA7;&#x9AD8;&#x4E8E;&#x7B2C;&#x4E00;&#x79CD;&#xFF0C;&#x4F1A;&#x8986;&#x76D6;&#x539F;&#x6709;&#x7684;&#x4E8B;&#x4EF6;&#x4FA6;&#x542C;</li>
<li>dom0 &#x7EA7;&#x4E8B;&#x4EF6;&#x7684;&#x53CD;&#x590D;&#x5B9A;&#x4E49;&#x4F1A;&#x8986;&#x76D6;&#x539F;&#x6709;&#x7684;&#x4E8B;&#x4EF6;&#x4FA6;&#x542C;</li>
<li><p>&#x4E0D;&#x63A8;&#x8350;&#x4F7F;&#x7528;&#x7B2C;&#x4E00;&#x79CD;&#xFF0C;html&#x548C;js&#x95F4;&#x6709;&#x7740;&#x5F3A;&#x8026;&#x5408;&#x6027;&#xFF0C;&#x6BD4;&#x5982;&#x4E8B;&#x4EF6;&#x540D;&#x79F0;&#x6539;&#x53D8;&#xFF0C;&#x9700;&#x8981;js&#x548C;html&#x90FD;&#x9700;&#x8981;&#x66F4;&#x6539;&#x4E86;</p>
</li>
<li><p>&#x63A8;&#x8350;&#x4F7F;&#x7528;DOM2&#x7EA7;&#x89C4;&#x8303;&#x8FDB;&#x884C;&#x4E8B;&#x4EF6;&#x7ED1;&#x5B9A;</p>
</li>
</ol>
<pre><code>&#x8BED;&#x6CD5;&#xFF1A;dom.addEventListener(eventType,eventHandler,[useCapture | option])
eventType:&#x4E8B;&#x4EF6;&#x7C7B;&#x578B;&#xFF0C;click,mouseOver ...,
eventHandler:&#x4E8B;&#x4EF6;&#x5904;&#x7406;&#x7A0B;&#x5E8F;&#xFF0C;&#x5F53;&#x6CE8;&#x518C;&#x7684;&#x4E8B;&#x4EF6;&#x7C7B;&#x578B;&#x89E6;&#x53D1;&#x65F6;&#x8C03;&#x7528;&#xFF1B;,
useCapture(&#x53EF;&#x9009;):&#x662F;&#x5426;&#x91C7;&#x53D6;&#x6355;&#x83B7;&#x89E6;&#x53D1;&#x6A21;&#x5F0F;&#xFF0C;&#x9ED8;&#x8BA4;&#x4E3A;false&#xFF0C;&#x8868;&#x793A;&#x91C7;&#x53D6;&#x5192;&#x6CE1;&#x89E6;&#x53D1;&#xFF1B;,&#x8BBE;&#x7F6E;&#x4E3A;true&#x65F6;&#xFF0C;&#x8868;&#x793A;&#x5728;&#x4E8B;&#x4EF6;&#x6355;&#x83B7;&#x9636;&#x6BB5;&#x89E6;&#x53D1;&#x4E8B;&#x4EF6;&#x5904;&#x7406;&#x7A0B;&#x5E8F;
option(&#x53EF;&#x9009;):{
                capture: false, // &#x8868;&#x793A;&#x662F;&#x5426;&#x8981;&#x4F7F;&#x7528;&#x6355;&#x83B7;&#x6A21;&#x5F0F;
                once: false, // &#x662F;&#x5426;&#x4E3A;&#x4E00;&#x6B21;&#x6027;&#x4FA6;&#x542C;&#x4E8B;&#x4EF6;
                passive: false // &#x4F18;&#x5316;&#x6EDA;&#x5C4F;&#x4E8B;&#x4EF6;&#x6027;&#x80FD;
            }


removeEventListener(eventType,eventHandler):&#x79FB;&#x9664;&#x4E8B;&#x4EF6;&#x76D1;&#x542C;
</code></pre><p><strong>&#x6CE8;&#x610F;</strong></p>
<p>&#x4E8B;&#x4EF6;&#x7C7B;&#x578B;&#x5FC5;&#x987B;&#x4E0E;&#x6DFB;&#x52A0;&#x65F6;&#x76F8;&#x540C;&#xFF0C;&#x5E76;&#x4E14;&#xFF0C;&#x4E8B;&#x4EF6;&#x5904;&#x7406;&#x7A0B;&#x5E8F;&#x5FC5;&#x987B;&#x548C;&#x6DFB;&#x52A0;&#x65F6;&#x6307;&#x5411;&#x540C;&#x4E00;&#x4E2A;&#x51FD;&#x6570;(&#x5185;&#x5B58;&#x5730;&#x5740;)</p>
<h2 id="&#x9ED8;&#x8BA4;&#x4E8B;&#x4EF6;">&#x9ED8;&#x8BA4;&#x4E8B;&#x4EF6;</h2>
<ul>
<li>&#x6BD4;&#x5982;&#xFF1A;a&#x6807;&#x7B7E;&#x7684;&#x8DF3;&#x8F6C;&#x4E8B;&#x4EF6;&#xFF0C;form&#x8868;&#x5355;&#x5185;&#x63D0;&#x4EA4;&#x6309;&#x94AE;&#x7684;&#x63D0;&#x4EA4;&#x4E8B;&#x4EF6;</li>
</ul>
<pre><code class="lang-js">btn.addEventListener(<span class="hljs-string">&quot;click&quot;</span>,<span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params">event</span>)</span>{
    <span class="hljs-comment">// &#x4E8B;&#x4EF6;&#x5BF9;&#x8C61;&#x8EAB;&#x4E0A;&#x7684;preventDefault&#x7528;&#x4E8E;&#x963B;&#x6B62;&#x9ED8;&#x8BA4;&#x4E8B;&#x4EF6;</span>
    event.preventDefault();
    <span class="hljs-comment">// &#x5982;&#x679C;&#x8F93;&#x5165;&#x4E0D;&#x4E3A;&#x7A7A;&#xFF0C;&#x5219;&#x63D0;&#x4EA4;&#x8868;&#x5355;</span>
    <span class="hljs-keyword">if</span>(ipt.value){
        <span class="hljs-comment">// console.log(form.submit);</span>
        <span class="hljs-comment">// &#x901A;&#x8FC7;&#x8868;&#x5355;&#x5BF9;&#x8C61;&#x81EA;&#x8EAB;&#x7684;submit&#x4E8B;&#x4EF6;&#x8FDB;&#x884C;&#x8868;&#x5355;&#x63D0;&#x4EA4;</span>
        form.submit();
    }
})
</code></pre>
<h2 id="&#x4E8B;&#x4EF6;&#x5192;&#x6CE1;">&#x4E8B;&#x4EF6;&#x5192;&#x6CE1;</h2>
<ul>
<li>&#x9ED8;&#x8BA4;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x70B9;&#x51FB;&#x7236;&#x5143;&#x7D20;&#x65F6;&#xFF0C;&#x4EC5;&#x89E6;&#x53D1;&#x7236;&#x5143;&#x7D20;&#x4E8B;&#x4EF6;&#xFF1B;</li>
<li>&#x70B9;&#x51FB;&#x5B50;&#x5143;&#x7D20;&#x65F6;&#xFF0C;&#x4F1A;&#x4F9D;&#x6B21;&#x89E6;&#x53D1;  &#x5B50;&#x5143;&#x7D20; -&gt; &#x7236;&#x5143;&#x7D20; &#x4E8B;&#x4EF6;</li>
<li>&#x4E0A;&#x8FF0;&#x8FC7;&#x7A0B;&#x79F0;&#x4E3A;&#x4E8B;&#x4EF6;&#x5192;&#x6CE1;&#xFF0C;&#x4E8B;&#x4EF6;&#x7531;&#x8D8A;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;&#xFF0C;&#x5192;&#x6CE1;&#x5230;&#x4E0D;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;</li>
</ul>
<h2 id="&#x4E8B;&#x4EF6;&#x6355;&#x83B7;">&#x4E8B;&#x4EF6;&#x6355;&#x83B7;</h2>
<ul>
<li>addEventListener &#x63A5;&#x6536;&#x7B2C;&#x4E09;&#x4E2A;&#x53C2;&#x6570;&#x4E3A;true&#x65F6;&#x8868;&#x793A;&#x91C7;&#x7528;&#x4E8B;&#x4EF6;&#x6355;&#x83B7;&#x9636;&#x6BB5;&#x89E6;&#x53D1;&#x4E8B;&#x4EF6;(&#x9ED8;&#x8BA4;&#x4E3A;false,&#x5373;&#x5728;&#x5192;&#x6CE1;&#x9636;&#x6BB5;&#x89E6;&#x53D1;&#x4E8B;&#x4EF6;)</li>
<li>&#x4E8B;&#x4EF6;&#x6355;&#x83B7;&#x7684;&#x987A;&#x5E8F;&#xFF1A;&#x7531;&#x8D8A;&#x4E0D;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;&#x5230;&#x8D8A;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;</li>
<li>html---&gt;body---&gt;box---&gt;item</li>
</ul>
<h2 id="&#x4E8B;&#x4EF6;&#x6D41;&#x7684;&#x4E09;&#x4E2A;&#x9636;&#x6BB5;">&#x4E8B;&#x4EF6;&#x6D41;&#x7684;&#x4E09;&#x4E2A;&#x9636;&#x6BB5;</h2>
<ol>
<li>&#x4E8B;&#x4EF6;&#x6355;&#x83B7;&#x9636;&#x6BB5;&#xFF0C;&#x7531;&#x8D8A;&#x4E0D;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;&#x5230;&#x8D8A;&#x5177;&#x4F53;&#x7684;&#x5143;&#x7D20;&#xFF1B;html-&gt;body-&gt;.box-&gt;.son</li>
<li>&#x5904;&#x4E8E;&#x76EE;&#x6807;&#x4E8B;&#x4EF6;&#x9636;&#x6BB5;&#xFF0C;&#x5373;&#x6355;&#x83B7;&#x5230;&#x6700;&#x5177;&#x4F53;&#x5143;&#x7D20;&#x5E76;&#x5904;&#x7406;&#x4E8B;&#x4EF6;&#x7684;&#x9636;&#x6BB5;&#xFF1B;</li>
<li><p>&#x4E8B;&#x4EF6;&#x5192;&#x6CE1;&#x9636;&#x6BB5;&#xFF0C;&#x76EE;&#x6807;&#x4E8B;&#x4EF6;&#x5904;&#x7406;&#x5B8C;&#x6210;&#x540E;&#xFF0C;&#x5BF9;&#x4E8B;&#x4EF6;&#x8FDB;&#x884C;&#x5411;&#x4E0A;&#x5192;&#x6CE1;&#xFF1B;.son-&gt;.box-&gt;body-&gt;html</p>
</li>
<li><p>&#x5B8C;&#x6574;&#x7684; DOM2 &#x7EA7;&#x4E8B;&#x4EF6;&#x6D41;&#x6A21;&#x578B;&#xFF0C;&#x4E3A;&#x4E8B;&#x4EF6;&#x7684;&#x89E6;&#x53D1;&#x63D0;&#x4F9B;&#x4E86;&#x6355;&#x83B7;&#x548C;&#x5192;&#x6CE1;&#x4E24;&#x4E2A;&#x65F6;&#x673A;</p>
</li>
</ol>
<h2 id="&#x4E8B;&#x4EF6;&#x4EE3;&#x7406;">&#x4E8B;&#x4EF6;&#x4EE3;&#x7406;</h2>
<pre><code class="lang-js"><span class="hljs-comment">// &#x5C01;&#x88C5;</span>
<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">delegate</span>(<span class="hljs-params">element, targetSelector, type, handler</span>) </span>{
    element.addEventListener(type, <span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params">event</span>) </span>{
        <span class="hljs-keyword">var</span> targets = <span class="hljs-built_in">Array</span>.prototype.slice.call(element.querySelectorAll(targetSelector));
        <span class="hljs-keyword">var</span> target = event.target;
        <span class="hljs-keyword">if</span> (targets.indexOf(target) != <span class="hljs-number">-1</span>) {
            <span class="hljs-keyword">return</span> handler.apply(target, <span class="hljs-built_in">arguments</span>);
        }
    }, <span class="hljs-literal">false</span>);
}
<span class="hljs-comment">// &#x4F7F;&#x7528;</span>
delegate(ul,<span class="hljs-string">&quot;li&quot;</span>,<span class="hljs-string">&quot;click&quot;</span>,<span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params"></span>)</span>{
    <span class="hljs-keyword">this</span>.style.backgroundColor = <span class="hljs-string">&quot;skyblue&quot;</span>;
})
</code></pre>
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